Creating Mini Grilled Cheese Hawaiian Rolls is straightforward if you follow these simple steps:

1. Preheat the Oven: Preheat your oven to 350°F (175°C).
2. Prepare the Rolls: Without separating them, slice the entire pack of Hawaiian rolls in half horizontally.
3. Mix the Butter: In a small bowl, mix the softened butter, garlic powder, oregano, salt, and pepper until well combined.
4. Spread the Butter: Spread the butter mixture evenly across the cut side of the top and bottom halves of the rolls.
5. Layer the Cheese: On the bottom half, layer the shredded cheddar and mozzarella cheese generously.
6. Close the Sandwiches: Place the top half of the rolls back on top of the cheese layer.
7. Bake: Place the assembled rolls on a baking sheet and bake in the preheated oven for about 10-12 minutes, or until the cheese is melted and the tops are golden brown.
8. Slice and Serve: Remove from the oven, allow to cool slightly, then slice into individual sandwiches. Serve warm.

These steps will guide you in creating these delightful mini sandwiches effortlessly.